can projects be shared?

greetings fellow BTB editors. i have a question. can we upload and share projects? . the reason i ask this is because im getting ready to upgrade my computer to have either 16 or 32 GB of system memory. im going to do this so i can create a massive world to drive in (i like playing Test Drive Unlimited,but dont like its physics). to this end i thought it would be cool if i could splice different player made tracks into 1 huge world. if sharing was possible, we editors could band together and become a psuedo-dev team, splice projects together and re-export them to the various games like Richard Burns, rFactor,Race07 (i run GTR Evo).